Glass Microfiber Filters - GRADE 934-AH
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934-AH - Depth filtration categorizes filter media that traps particulate within the random matrix of fibers found within the thickness of the media. The efficiency rating of the filter is characteristic of the complex pore structure that develops as the fibers overlap. The fibrous material within the filter is commonly glass micro fiber or polypropylene.
In depth filters such as glass micro fiber, the purity of the filter is dictated by the presence of, if any, binder material that acts as a strengthening agent and aids in holding the fibers together.
Because of the characteristically high flow rates of depth filters, they are generally used in applications such as single and multi process removal of sediment and course particulate. Glass micro fiber filters are available without binders, making the inert matrix an ideal medium to entrap sediment for further analysis and counting. Also, depth filtration media is commonly used as pre-filtration prior to surface filtration substrates such as membranes.
Fine porosity, fast flow rate, with a 1.5µm size particle retention. This material is the standard for suspended particle analysis in water and cell harvesting. RIA scintillation counting. Binderless borosilicate glass microfiber
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Glass Microfiber Filtration - GRADE TCLP
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Binder-free, borosilicate glass fiber filters have 0.7 micron pore size, meet U.S. EPA requirements for Toxicity Characteristic Leaching Procedure (TCLP .
Available in six diameters. The 4.7 cm (47mm size is recommended for use in filtering highly granular samples or those with <10% solids; 9 cm (90mm size is recommended for use with highly granular samples; the 14.2 cm (142mm size provides four times the filtration area of 4.7 cm (47mm filters (ideal for samples with >10% solids .
About different glass filter grades
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Glass Microfiber Filtration - GRADE A
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Grade A - Fine porosity, fast flow rate, with a 1.6µm size particle retention. Frequently used in the filtration of precipitated proteins and cells. Ideally suited for use as a filter for radioimmuno assay of weak beta emitters by scintillation counting and gravimetric determination of airborne particulate. Binderless borosilicate glass micro fiber.
About different glass filter grades
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Glass Microfiber Filtration - GRADE B
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Grade B - Fine porosity, medium to fast flow rate, with a 1.0µm size particle retention. Ideally suited for the collection of biochemical polymers that have been precipitated by denaturation. This material is twice as thick as Grade A with a higher loading capacity. May also be used as a solid particulate filter for gasses or as a prefilter. Binderless borosilicate glass microfiber.
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Glass Microfiber Filtration - GRADE C
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Glass Microfiber Filtration - GRADE D
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Glass Microfiber Filtration - Flat Stock Filter Paper
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